Material-carrying flight



Oct. 9, 1928. 1,686,567

N. D. LEVIN MATERIAL CARRYING FLIGHT Filed April 24, 1925 2 Sheets-Sheet 1 Oct. 9, 1928.

N. D. LEVIN MATERIAL CARRYING FLIGHT 2 Sheets-Sheet Filed April 24, 1,925

Patented Oct. 9,1928.

NILS I). LEVIN, OF COLUMBUS, OHIO, ASS IGNOR TO THE JEFFREY MANUFACTURING COMPANY, OF COLUMBUS, OHIO, A CORPORATION OF OHIO.-

MATEBIAL-CARRYIN G FLIGHT.

Application filed April 24, 1925. Serial No. 25,610.

The present invention relates to certain new and useful improvements in material carrying flights, such as are used in conveyors of the scraper type.

The object of the invention is to provide a conveying flight adapted to project laterally from a single strand of conveyor chain, which flight will be held rigidly against both longitudinal and angular movement relative to said chain in position to engage and propel loose material along the conveyor trough, and which may be freely swung in planes extending transversely of the chain as and for the purposes hereinafter set forth.

In one embodiment of theinvention disclosed, the flight is so formed as to prevent, or at least minimize, the danger of the flights catching on any protuberances, such as joints in the conveyor trough, and breaking.

The means whereby 'I attain thisobject are fully set forth in the following specification and illustrated in the accompanying drawof which in o 1 is a plan view, partly in section, of

a chain embodying my invention, with conveyor elements attached.

Fig. 2 is a side elevation, artly in section, of the chain illustrated in ig. 1, showing, in end elevation, the conveyor elements.

Fig. 3 is a section taken along the line III-III of Fig. 1, showing the chain and,

in section, the conveying elements, these.

parts beingshown in their relation to the con-' ve or trough.

ig. 4 is a view similar to Fig. 1, showing a different form of flight.

F i 5 is a detail view in side elevation of the ight shown in Fig. 4.

Fi 6 is a sectional view substantially on the line VI-VI of Fig. 4.

Like numerals refer to similar parts in the several figures.

In my copending application, Serial No. 721,87 1, filed June 23,1924, of which this present application is a continuation in part. I have shown my improved chain and carrying flight comprising a series of alternate strap and bar links which are so articulated as to permit universal flexure of the chain withinlimit sufficient to take care of the usua1 conditions under which it is used.-

The strap links consist of flattened endless loops 1, preferably formed of metallic bar stock of substantially rectangular crosssection, but, if desired, they may be formed of thickness ofmetal for the pintlcs presently to be described. The bosses 4 are pierced by suitable apertures, into which pintles 5 are secured in any suitable manner, being here shown as riveted. Between the bosses 4, the

pintles 5 are provided with the Y spherical- -bodies 6 which engage the bearing seats 20f the adjacent link, and these parts are of such proportions as to permit universal relative an ular movement of adjacent links.

lhe spherical portions 6 of thepintles 5, which are engaged by the seats 2 of links 1,- permit universal movement of the links relative to one another.- It will be seen that the coned portions 4 at the ends of links 3, which give the requisite strength for supporting the pintles 5, are opposed by complementary recesses formed in the side faces of the links 1, so that a suflicient clearance is provided to permit rocking of thelinks relative to each other upon the spherical end bearings. Reference to Figs. 2 and 3 of the drawings shows that the conical portions 4.- and the opposed complementary recesses are not in contact, but merely give clearance for free link movement in any direction.

To connect the ends of thechain to ether, I have provided a coupling link 7 which is formed of the parts 8 and 9, each having an end bearing seat 2, similar to the seats formed in the links 1, adapted to engage the ,pintle 5 of the adjacent bar link. Formed on the end ofthe part 8 is one member of an interlocking connection, here shown as a transveyor chain of peculiar construction, it is to be understood tha any other type of chain The strzi i has.

"'*'".-vention. Y links .l'are' "provided, as here shown, wit two laterallyprogecting lugs I 13, a pivot pin 14 being remova ly mounted therein, u on which pin is mounted the laterally. pro ecting conveyor flight 15. By this both angular and bodilymovements ongitudinally of the chain, but are free to swing thrown, either manually or by mechanical struction' and mounting, will remain in such tilted position until again thrown to working j position, as shown in full lines. I I

and carry it intoand along the conveyor, it bein here shown in connection'with a conventlonally illustrated trough 16, and while other forms of wave or'flights adapted to propel material may e substituted for that are illustrated, I have found the particular.

flights shown to possess marked advantages with certain classes of material. {light 15 is formed hollow, as shown, for

tness, and an inclined portion 17 prefer-. 'ab y,-on each side of the longitudinal center. of the flight, so as to be effective in either direction of movement of the chain. This." gives. a flight of-sufiicientheight and of s shovel-like formation toengage and carry along loose. material, suchas coal, without sliding idly beneath it, and yet it will pass under without stalling or breaking, any body. too heavy to be'moved. 'In practice, masses of loose'material will accumulate between the opposed incline 17 of adjacent flights and V befcarried along en masse.

15' is referably thrown up at an angle to meet t e center line of the chain, as shown, while permitting the'bod of the flight to be flat upon the ground.

osition shown in Fig. 3. In or er-to protect the pivot bolt 14 and ried over or curved about the pivot member 14 (see Fig. 3) to house and; protect it.

., Referring to the fli ht illustrated in Figs. served that the longi- 19 of the flight are inclined clining the edges 19, as shown, the

a 4 I v oses of thisinvention ;-ma be" substituted orthafihere illustrated wit out departure. fromitheispirit of my inthe line of a 'oint is indicatedby the dotted .line J--J, and

means the flights 15 are'securely held against 1 in dotted lines in Fig. 3, the flig t 15 may he means, to an idle position, and, due to its con- ,means ances with which the flights may come in con- I have shown, in the drawings, a'zcarrier flight adapted to slip beneath loose material "inwardly from the base to the tip, and this The said .ful flight, particularly when used with a con- The rear or attaching end 18 of the flight.

picking up and carrying proper-loads withuch angularly disf gosed'end also perm-its the overthrow of the cal 15 when'the flight is thrown to the ;dot-.. te ine or the adoption of mechanical expedients prevent 'amming or clogging the pivotal acnon of t eflight, the attaching end 18 is car- I [of bearing points a'nd'a housing intermedisometimes present at the joints in the conveyor trough, and dan "er of the flight catching and breaking'is e iminated. In Fig. 4

(material, and so relieves the flight from any breaking strains at its extreme tip.

With a flight constructed as shown in Figs. 4, 5 and 6, breakage issubst-antially eliminated b .reason of the provision of the escribed for relieving the fli hts' from any breaking strains. due'to protu ertip of the flight due to engaging large masses of material.

.While- I have shown the edges 19 inclined is preferable, the inclination might be reversed and be inwardly from the tip to the base'with the same beneficial results. I

It is to be understood, however,-that the parts above described may be subject to wide variation in. structure without departing from the spirit of my. invention.

From the foregoing disclosure, it will be .seen that l have provided a. material carrying flight which can be universally used on conveyor chains of the type shown and specified.

This construction gives an extremely useveyor chain of this type, having universal movement ofthe links by reason of the articulation shown and described, insures the flights adapting themselves to the inaccura-' cies of the surface over which they travel, and I to more effectively handle material, that is, n

out clo gmgl or breaking when striking unusual 0 ects. I v

Such changes as involvemechanical skill equivalent'of those herein'disclosed, are to be regarded as within the purview of. my invention.- What I claim is 1. In a conveyor of the class described, the

combination of a chain link, a pivot member carried by said link and extending longitudinally thereof, and a conveyor flight pivoted to said member, said flight having a plurality 7 .125 ate said 2. In a 'conveyor'chain, the combination of a chain 11nk,'a pivot member carried by said link and. extending longitudinally thereof, a

points extending over said pivot member. I

fly i f ights 65 will ride over protuberances, such as are conveyor flight pivoted to said member "the bearing portion of said flight being a ove the horizontal bottom plane of the flight when the flight is in working position whereby said bottom plane is adapted to lie substantially in the bottom plane. of the chain, said bearing portion being disposed to permit the flight to swing across. t e link to idle position. l

3. In a conveyor chain, the combination of a chain link, a ivot member carried by said link and extending longitudinally thereof, a conveyor flight pivoted to said member,

- said flight having a plurality of bearing points and a housing intermediate said points extending over said pivot member, the bearing portion of said flight being above the horizontal bottom plane of the flight when the flight is in working position whereby said bottom plane is adapted to lie substantially in the bottom plane of the chain, said bearing portion being disposed to permit the flight to swing across the link to idle position.

4. In a conveyor of the class described, the

combination of a chain link having spaced laterally extendin lugs thereon, a pivot,

shape in cross-section, the walls of said flight merging into bearing lugs for pivotally engagm said pivot member.

6. n a conveyor of the class described, the

combination of a chain link, a ivot member carried by said link and extending longitudi-Q nally thereof, a flight of substantially V shape in cross-section, the walls of said flight merging into bearing lugs for-pivotally en-, gaging said pivot member, and a housing intermediate said lugs pivot member. 7 H

In testimony whereof I have hereunto set my hand.

N ILS D. LEVIN.

and extendingover said 

